Selling one session

I offer a 6-week one-on-one coaching program with daily curriculum to self-coach in between sessions. I just had a potential client tell me that she isn’t sure that she is ready to go all in on the program, but would like to purchase one session with me. I am curious if doing this is recommended, or if I should stick to my offer and let them know that they would get the most value from completing the program in its entirety. Thank you!